1/5+1/4+1/8+1/16. Tolong kakak

0.2+0.25+0.125+0.0625 = 0.6375

Atau
=16/80+20/80+10/80+5/80
=51/80
=0.6375

1/5 + 1/4 + 1/8 + 1/16
= 4/20 + 5/20 + 2/16 + 1/16
= 9/20 + 3/16
= 36/80 + 15/80
= 51/80
= 0.6375

maaf kalau salah:v